Is this grammatically correct?
Es malo que las fuentes de la naturaleza estén contaminadas porque es malo para el medio ambiente y los animales.

Trigonometry hellllllpppppppp asap

Yoku is putting on sunscreen. he uses 2\text{ ml}2 ml to cover 50\text{ cm}^250 cm 2 of his skin. he wants to know how many milliliters of sunscreen (c)(c) he needs to cover 325\text{ cm}^2325 cm 2 of his skin. how many milliliters of sunscreen does yoku need to cover 325 \text{ cm}^2325 cm 2 of his skin?

What is the radius of a circle with an area of 78.5 cubic inches? use 3.14 for pie